Reduced Mechanical Wear: Factory-balanced design minimizes vibration

and MPR 5000 series gear train actuators

Enhanced Flame Sensing: Improves ignition reliability

while pink or red signals a high moisture concentration requiring a filter drier replacement

Why is continuous drainage better than intermittent discharge for my heat exchanger

Lochinvar & A.O. Smith 100112148 Switch 320788-704 Reduced Mechanical Wear: Factory-balanced designThe Lochinvar & A. O. Smith 100112148 Switch is a critical safety component designed for high efficiency water heaters and boilers. As a normally open pressure switch, it monitors negative air pressure created by the combustion air blower, ensuring the unit only proceeds to ignition once a proper draft is established. This genuine OEM replacement part is engineered to meet 2" WC specifications, providing the precision required to prevent hazardous gas